A method for forming an antislip material. A flexible thermoplastic carrier is provided. A hot release surface is provided. Provided is a first layer of discrete thermoplastic particles, sifting on the hot release surface. The discrete particles are above their softening temperatures, providing in the first layer a tackiness. The method includes contacting the carrier with the tacky first layer for sticking the first layer to the carrier, and thereafter removing the carrier, and therewith the tacky first layer stuck to the carrier, from the release surface. Thereby the carrier is provided with a hot, preferably discontinuous and/or elastomeric antislip coating. With a heat energy of the hot coating a bond is formed between the carrier and the coating. The removing of the carrier includes pulling the carrier out of the contact with a pulling-out force. The temperature of the hot release surface is above the melting temperature of the carrier. The carrier would be spoiled, if heated completely to the temperature of the release surface and simultaneously pulled with the pulling-out force. Therefore the contacting time is kept shorter than a minimum time required by a heat of the hot release surface for spoiling the carrier. Flat-topped roughening projections can be included in the antislip coating.
B05D 5/08 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
B05D 1/28 - Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
B29C 59/02 - Surface shaping, e.g. embossingApparatus therefor by mechanical means, e.g. pressing
B29C 65/00 - Joining of preformed partsApparatus therefor
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 27/12 - Layered products essentially comprising synthetic resin next to a fibrous or filamentary layer
B32B 27/14 - Layered products essentially comprising synthetic resin next to a particulate layer
D06N 3/00 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
D06N 3/04 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
2.
Antislip flexible materials and methods for their making and use
A method for forming an antislip material. A flexible thermoplastic carrier is provided. A hot release surface is provided. Provided is a first layer of discrete thermoplastic particles, sifting on the hot release surface. The discrete particles are above their softening temperatures, providing in the first layer a tackiness. The method includes contacting the carrier with the tacky first layer for sticking the first layer to the carrier, and thereafter removing the carrier, and therewith the tacky first layer stuck to the carrier, from the release surface. Thereby the carrier is provided with a hot, preferably discontinuous and/or elastomeric antislip coating. With a heat energy of the hot coating a bond is formed between the carrier and the coating. The removing of the carrier includes pulling the carrier out of the contact with a pulling-out force. The temperature of the hot release surface is above the melting temperature of the carrier. The carrier would be spoiled, if heated completely to the temperature of the release surface and simultaneously pulled with the pulling-out force. Therefore the contacting time is kept shorter than a minimum time required by a heat of the hot release surface for spoiling the carrier. Flat-topped roughening projections can be included in the antislip coating.
B05D 5/08 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
B05D 1/28 - Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
B65D 33/00 - Details of, or accessories for, sacks or bags
B29C 59/02 - Surface shaping, e.g. embossingApparatus therefor by mechanical means, e.g. pressing
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 27/14 - Layered products essentially comprising synthetic resin next to a particulate layer
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 27/12 - Layered products essentially comprising synthetic resin next to a fibrous or filamentary layer
D06N 3/00 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
D06N 3/04 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
A transportable stack (26), including a pallet or a similar carrier (14), on which there are packages (3), in layers (28) above each other, the packages (3) consisting of sacks (39) containing liquid and/or paste (10). According to the invention, there is a flexible fixing flap (30) extending from at least one first package (4), connecting to the first package (4) with a suitable tensile strength. A part of the fixing flap (30) (the squeezed fixing-flap-part (24)) is positioned between an abutting surface (7) of a second package (19) and a third package (12) pressing, from below or from above, to the said abutting surface (7), as between squeezing surfaces (23). A fixing squeeze between the squeezing surfaces (23) and the squeezed fixing- flap-part (24) provides such a shearing fixation of the squeezed fixing-flap-part (24) as hinders a slipping of the fixing flap (30) out from between the squeezing surfaces (23). The shearing fixation prevents the fixing flap (30) from completely slipping out from between the squeezing surfaces (23) during a transportation of the transportable stack (26). A palletising robot is used for the stacking and/or a form-fill- seal machine (63) is provided for providing the packages (3).
B65D 71/00 - Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottlesBales of material
B65D 33/00 - Details of, or accessories for, sacks or bags
4.
Antislip, heat sealable plastic flexible packaging bag and method and apparatus for its production
2. The packaging material includes a multiplicity of randomly distributed, separate antislip protrusions of a first substance. The protrusion height is between 50 micrometres and 10000 micrometres, with an average of top-plan-view aspect ratios of the antislip protrusions being at most 5.0. Some antislip protrusions have a hidden surface portion being a portion of a free surface of the antislip protrusion, which the antislip protrusion covers from a viewer in a top plan view of the wall. The first substance is a thermoplastic polymer, and the wall's outer surface is of a substance at least somewhat different from the first substance. It is an important feature that the first substance has a melt mass flow rate of at least 0.6 g/10 min. An apparatus, for producing the packaging material, includes a film blowing die head, a cooling air ring, and a particle dispersing unit therebetween, for dispersing polymer particles on the bubble neck at a place in, or closely under, an expanding area where the bubble has a divergent shape.
A method for forming an antislip material. A flexible thermoplastic carrier (13) is provided. A hot release surface (45) is provided. Provided is a first layer (29) of discrete thermoplastic particles (39), sitting on the hot release surface (45). The discrete particles (39) are above their softening temperatures, providing in the first layer (29) a tackiness. The method includes contacting the carrier (13) with the tacky first layer for sticking the first layer (29) to the carrier (13), and thereafter removing the carrier, and therewith the tacky first layer stuck to the carrier, from the release surface (45). Thereby the carrier (13) is provided with a hot, preferably discontinuous and/or elastomeric antislip coating. With a heat energy of the hot coating a bond is formed between the carrier and the coating. The removing of the carrier (13) includes pulling the carrier out of the contact with a pulling-out force. The temperature of the hot release surface (45) is above the melting temperature of the carrier (13). The carrier would be spoiled, if heated completely to the temperature of the release surface and simultaneously pulled with the pulling-out force. Therefore the contacting time is kept shorter than a minimum time required by a heat of the hot release surface (45) for spoiling the carrier (13). Flat-topped roughening projections (31) can be included in the antislip coating.
B29C 59/02 - Surface shaping, e.g. embossingApparatus therefor by mechanical means, e.g. pressing
B29C 70/64 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporation into the surface by force
B65D 33/00 - Details of, or accessories for, sacks or bags
6.
FROZEN FISH BLOCK PACKAGES AND METHODS FOR PRODUCING AND USING THE PACKAGES
A stackable package (13) comprises a packaging sack (17) and a block (2) of plate-frozen fish packed therein. The sack (17) is a plastic sack (17) having a second outer surface (23), on which the package (13) can be laid on a stack (32), and an opposing first outer surface (6). A roughened surface-part (15) of the first outer surface (6) comprises antislip protrusions (1) projecting from a first wall (7) of the sack (17). A skidproofed surface-part (26) of the second outer surface (23) comprises a skidproofing material (27), of a suitable fibrous structure, fixed to a second wall (24) of the sack (17). The skidproofing material (27) is capable of a nonslip bond with the antislip protrusions (1). The sack (17) has a wear rate of between 0 and 0.35. The wear rate is determined in a wear-rate test in which (at a temperature of -20°C and a compression of 11557 Pa) a specimen of the skidproofed surface-part (26) is slided on a roughened surface-part specimen (16) and the wear rate is defined as the proportion of the number of anstislip protrusions (1) breaking off the roughened surface-part specimen (16) due to the slide. The advantage of the invention is that the packages (13) can be manually re- stacked without their losing too many of their antislip protrusions (1).
Antislip, heat sealable plastic packaging bag (16), formed from an antislip flexible packaging material (35) whose wall (45) has an average surface weight of at most 500 g/m2. The packaging material (35) comprises a multiplicity of randomly distributed, separate antislip protrusions (7) of a first substance. The protrusion height (11) is between 50 micrometres and 10000 micrometres, with an average of top-plan-view aspect ratios of the antislip protrusions (7) being at most 5.0. Some antislip protrusions (7) have a hidden surface portion (12) being a portion of a free surface of the antislip protrusion (7) which the antislip protrusion (7) covers from a viewer in a top plan view of the wall (45). The first substance is a thermoplastic polymer, and the wall's outer surface (46) is of a substance at least somewhat different from the first substance. It is an important feature that the first substance has a melt mass flow rate of at least 0.6 g/10 min.. An apparatus, for producing the packaging material (35), includes a film blowing die head (24), a cooling air ring (1), and a particle dispersing unit (38) therebetween, for dispersing polymer particles (36) on the bubble neck (21) at a place in, or closely under, an expanding area (25) where the bubble (19) has a divergent shape.
B65D 33/00 - Details of, or accessories for, sacks or bags
B29C 59/02 - Surface shaping, e.g. embossingApparatus therefor by mechanical means, e.g. pressing
B29C 70/64 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporation into the surface by force
8.
ANTISLIP FLEXIBLE MATERIALS AND METHODS FOR THEIR MAKING AND USE
A method for forming an antislip material. A flexible thermoplastic carrier (13) is provided. A hot release surface (45) is provided. Provided is a first layer (29) of discrete thermoplastic particles (39), sitting on the hot release surface (45). The discrete particles (39) are above their softening temperatures, providing in the first layer (29) a tackiness. The method includes contacting the carrier (13) with the tacky first layer for sticking the first layer (29) to the carrier (13), and thereafter removing the carrier, and therewith the tacky first layer stuck to the carrier, from the release surface (45). Thereby the carrier (13) is provided with a hot, preferably discontinuous and/or elastomeric antislip coating. With a heat energy of the hot coating a bond is formed between the carrier and the coating. The removing of the carrier (13) includes pulling the carrier out of the contact with a pulling-out force. The temperature of the hot release surface (45) is above the melting temperature of the carrier (13). The carrier would be spoiled, if heated completely to the temperature of the release surface and simultaneously pulled with the pulling-out force. Therefore the contacting time is kept shorter than a minimum time required by a heat of the hot release surface (45) for spoiling the carrier (13). Flat-topped roughening projections (31) can be included in the antislip coating.
B29C 59/02 - Surface shaping, e.g. embossingApparatus therefor by mechanical means, e.g. pressing
B65D 33/00 - Details of, or accessories for, sacks or bags
B29C 70/64 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporation into the surface by force
patents
